A device that produces elect-:yn68 t dtqq 76xzgnwricity by transforming chemical energy into electrical energy is called a n8n:6 wxy t6-z7qdtqg

  A car battery

  The total amount of charge that passes through a wire's full cros:bxab.k4tg 1s 4/darcs section at any point per unit of tibrcaa t 4/g1skxdb:.4me is referred to as

  The direction of convention curren z( h3/o0nr.zlrs+b)z*xb t grt is taken to be the direction that

  A coulomb per second is thed 2z, zs:ng2kh same as

  Car batteries are rated in "amp-hours." This is a m-phmqpuv) ju.u846vmeasure of their

  The resistance of a wirext5 *;8 3t(gmaje pmbe is defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wire ivb6cc/dr c9e. s

  The resistivity of a wire dp:bhzc q* ,; muwwjm:3epends on

  Which conducting mate fbh3w/weaa/*riz2 s* rial has the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do thetc zn* y d*xc)uobg82: resistivit2ycnd xc*t 8*uoz:g) bies of these two wires compare?

  Consider two copper wires. One has twice the length of thez .hg6j5by.)l p4 gf-1okholl other. How do the resislhl b1.o)oyl f gzj6h.5 p-gk4tances of these two wires compare?

  Consider two copper wires. One has twice th 8gl:jw mm;z5 foo.e3oe cross-sectional area of the other. How do the resistances of these two wiremoz 3 5; 8ojeom.:glfws compare?

  Consider two copper wires. One has twice the fo2pmog 0+v2s length and twice the cross-sectional area of the other. Hopo+fgm os022vw do the resistances of these two wires compare?

  The length of a wire is doubled and thej, 80+olyr 9t5milxnv radius is doubled. By what factor does v8 l n5m, +y0tjrxl9oithe resistance change?

  How much more resistance does a 1.0 cm diameter rod have vt73jqfj6:+h cdke42*xefd n7 i6lra compared to a 2.0 cm diameter ro74hf:3lxrjte2 6*fdnk q67ca dvj +ied of the same length and made of the same material?

  The resistivity of most common5yfswhczuh/: pf2j+/e(,n:ep 8pp t j metals

  Negative temperature coefficients of resi-mi2up (+u) s1k1w c(s m,qc)khabnedstivity

  What is 1 W equivalenglpt* yl4h00 ut to?

  A kilowatt-hour is equiv vc+r+oct3 6vgalent to

  If the resistance in a constant voltage circuit is doubled, the pobc5 ;l,i1 w+gf9 lzpo*(gwph5tkoej +wer dissipated by thatllopj+goc 9+ p,(wz5eiwb*15;tf ghk circuit will

  If the voltage across a circuit of constant resistance is doubled, the power dis te2g-1 ojk)wlsipated by 1-)w 2kjoelgtthat circuit will

  If the resistance in a circuit with b 5aa60 :clkfcconstant current flowing is doubled, the power dissipated by thaa:akl6 bf 50cct circuit will

  If the current flowing through a bb0 2 *yt/oqsccircuit of constant resistance is doubled, the powe/yqbct*2b s0 or dissipated by that circuit will

  During a power demand, the voltage output is redunzc+tyjjgdv- :3 ceo0 7:qb9uced by 5.0%. By what percentage is the power vteuyn 3ccj79:d zg + q-jb0:oon a resistor affected?

  A current that is sinusoid)dbjd *0v( fwkal with respect to time is referred to as

  Consider two copper wires each carrying a current o3uqmoz4b/5sigo-5 p)lr* r. gsw+ u ; kab1lxvf 3.0 A. One wire has twice the diameter of the other. The ratio 4ws3)ivo+zm5lrq-.s1x5u/ggk *o pbul;rb aof the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero w u( :csv g/yhde k(xx9(jb5l+at very low temperatures are rx(5uyc+ dh (lks/wvg je(9bx: eferred to as

  What current is flowing if 0.67 C of :(s 4 z6m9hhv9a 4ohhm4z *fq hjtb7bccharge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatusjnf4 ((cijo+u wx znjsq9, f0 +a2g7qv in 2.0 min. What is the cnjo(qjnf7x+ sv9qf,a 0j+z(guw2i4 average current?

  How much charge must pass by a point in 10 s for the currentgnk k)oh*7tf4 7jcc +rwze:bavh*c1 ; to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowing r)twpq3d8kl;5m 0 vuu */udee if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which rb-fuv2 d.a8egwd.f-x66 (z+xlqj tldraws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed through the coffee makeg d+q vzu. 6-xtx28l.rbe-(j6w dfla fr?

  In an electroplating process, it is desired to deposit 40 mg of silver on a meta6 ht b82)xo29esol mj6tw )cekl part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (8xees2bjm o k2tcl9t6ho 6)w)The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resistaxo8q 6*k7jaij /zk ux-nce ofxzi/*k qj7 k6j-au8o x 330 W?

  What is the voltage across a 5.0-W resistor if brbm1.md- , w yr/,+tsrad3e othe current through it is 5.0 A?

  A 4000-W resistor is cok1mf t:l,or3xnnected across 220 V. What current will flow?

  A light bulb operatin 0lqz887txpaig at 110 V draws 1.40 A of current. What is its resistance7z0pi8a tlq8 x?

  A 12-V battery is connected to a 100-W resif1jrn3i-ibi,tiz5w 2 sah9s; wvv1 r 8stor. How many electrons flow through the w hw 3fsv8zin,1bar2 iwti rj-is1;59vire in
1.0 min?

  What is the resistance of 1.0 m coppe. 06ez f:/kdhzrri ;trr wire of diameter 0.40 inch? (The resistivity ofe .i0kzr:dhf6/r; rzt copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rlmobr0 (h 06gfod 1.0 cm in diameter and 45 m long, if the resistivity is g(bfh0or l 06m$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resishig 06p/6: sbg9 xgwabtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resisthf 4w;vc h41mg.tg /h+zau 8lqivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0z e/cc)p,g( vf.040 ohms. What is its resistivity?

  Calculate the current throufckov z i 61b 9::mfyz,kd-)hwgh a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nikz kd)f1y 6 :vwfiboch- :z,m9chrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 ok3ek ,3j6q n 0od kav.zg.pg (xqb8/icm long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carri,zob0 o8/aj.6kxdg3piq g.(e k3vqknes 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wir3 x:iwt/pp0 dn58aavh2zvyt .e has a radius of 0.50 mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wir2hx 9px i6hydmyu7c)a- dp o/+e (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance nqpf(/ 7xi crqc/ i (cpu48q:mof $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivitypk*7,xd*9 dz ove5gqx of platinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the melting point of indium. The resistad1 sn xg;yr +abz*h):fpu r)uq)18oeonce og)ns)ay)hq1zoupd ex1o;:8+uf* br rf the platinum wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing through an d jj70e*2x -o(;leau h8ksxq8w .tzyk$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 120fs. xg4/.at-dd(9 k usn)qxl d0 W. What current will it draw?

  A 150-W light bulb running onlv :vc;i6 rhgh5n7sj- 110 V draws how much current?

  What is the nominal resistance of a 100-W ligh1:5ym-q ck f5l v7ttclt bulb designed to be used in a 120-: mqtv 55l- cklfyt17cV circuit?

  A toaster is rated 800 W at (eko8 mbt+3zd 120 V. What is the resistance of its heating element? +8dbo(zk3tem

  A 200-W resistor is ra- qp wbi 4wi:)j2obj 1xjs,lh/ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedtp3qs-0g.p u.mc1v wjiq bn/zy79 u6 f at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb):wi mf3dl4:ia0l zic . If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bultyib7ddmv 16fxj508m b. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What oygj dx 00z 0qeg7nh+mg9,l:bis its resistance?

  How much does it cost to*d6u*ybpkeif* o s4l- lj 8)kz operate a 25-W soldering iron for 8.0 hours, if energy costs kl)y us bpd*kzj i**-ol8f 46e$0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hn1*i*:onw ji 1gokuo2/ omb7gours?

  A 1500-W heater is connected t u0va, v5yt 8zj4r0rgx:tl7 hg b4lct2o a 120-V line for 2.0 hours. How much heat energy is produced? l:ryr,7 vjxl4a52z ghg tt04c0v8ubt

  A battery is rated at 12 V and 160 A-h. How much jk:7t5js qrg 5energy does the battery store?jg75t qjrs k:5

  How much energy does a 25-W solt) pdj :xez +m2v8iig/dering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assu2qyh8fuusuv, 7 e/smq1 3 *la n2z-kfoming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate 2y/u13* mh 8qvua,s foeznk 7ql2f-suthe bulb.

  A 400-W computer (computex:;*ryui9hpwlxll ,y5n*rc 5l cd9 j:r plus monitor) is turned on 8.0 hours per day. If electricity costs 10 centsr y;*u jl:lcl*dxn5rl9 hi : xy9w5pc, per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cos2yw(h oi8xnp n3cf6.rt of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if elect .683nf2oixc phywrn(ricity costs 8.0 cents per kWh?

  The heating element in an electric drier /0dtralcb d p w ezhgou7/-2:9operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire willb7-9de2azop/cdlg/ t w0hr u: depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows x4x .9/b:n u htr)vyvdthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost7a/d g3cm :,bs vg c9ymjbb5.cs $1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% efficiency. How much cxu5)hudk2)krlt+ l c:6kyjwukm*, x 6urrent does it draw from a 120-V line 626 k5ml:hk ,ckyr wj*)tu dux+xuk)l? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V;k1+7rr, (fgw/aqv )ynkhq-lxs5 vl k ac power source. What rms current flows through this deviceyf1x/qls vq 7a lrhr)vk;5g-w k+n,k(?

  A 500-W device is connected to a 120-V ac power source. What pe u u*jizb/ f8gp /nlms-h5,+ggak current flows through this devi m8g/* g5 sngizfl,+/-uuphj bce?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltag y xzi 26-hvviov*l1j74g xft)*yfh2i i 67vx)- gjvv4tl1xzoe across this device?

  The diameter of a copper wireo: 7(d9wp;l ; yjrx37l7 5jumnp5zikui 9yrnw is 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electronsn9ky5rl5 d7;z9oi:ym(37nu pxru;7pjw jw l i ? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)